Hole making apparatus
AssigneesOsg Corporation, Hukuzo YAGISITA
InventorHukuzo Yagista
Life of this patent
Estimating the term…
Abstract
An eccentric rotation drive mechanism which is rotatably contained in a first slide container is provided with an outer cylinder, an internal cylinder which is housed at eccentric position thereof and a first air motor contained therein. One end of a rotation shaft portion, that is, a shaft of the first air motor is fastened to a hole making tool, the other end of which is coupled to the end surface of the outer cylinder through a first reduction device. The rotation of the air motor makes the hole making tool rotate and revolve and simultaneously the rotation of a second air motor mounted outside of a casing is transmitted to a ball screw through a rotation transmission device inside of a second slide container to advance and retreat a feed drive mechanism so as to machine a hole in a workpiece.
Claims22
A hole making apparatus comprised of
- an eccentric rotation drive mechanism comprised of passages for air for causing a first air motor which is provided at an intermediate part in a longitudinal direction of a rotation shaft portion on an axis of a hole making tool to rotate and an eccentric cylindrical member in which a cylindrical member which forms said passages are fit, which is coupled to said first air motor through a first reduction device, and which has an eccentric axis (center axis of outer cylinder) which is parallel with the axis of the hole making tool integrally formed together,
- a first slide container in which said eccentric rotation drive mechanism is rotatably contained,
- a feed drive mechanism which is provided with a second air motor, transmitting means by which a rotational motion by said second air motor can be transmitted, a second reduction device, a ball screw and a fixed nut,
- a second slide container which contains a part of said transmitting means, said second reduction device and a part of said ball screw and which advances and retreats in the axial direction of the hole making tool by said feed drive mechanism, and,
- a casing in which said first slide container and said second slide container are contained,
- said casing is provided with a fixed nut with which said ball screw is engaged at an opposite end to said hole making tool and with a sliding means for making said first slide container and said second slide container slide,
- said first slide container and said second slide container are coupled by a coupling member, and
- said hole making tool can rotate about its axis and simultaneously revolve around said eccentric axis (center axis of outer cylinder) of said eccentric cylindrical member to make a hole in a workpiece.
A hole making apparatus comprised of
- an eccentric rotation drive mechanism comprised of first power supplying means for causing a first electric motor which is provided at an intermediate part in a longitudinal direction of a rotation shaft portion on an axis of a hole making tool to rotate and an eccentric cylindrical member in which a cylindrical member which contains said first power supplying means is fit, which is coupled to said first electric motor through a first reduction device, and which has an eccentric axis (center axis of outer cylinder) which is parallel with the axis of the hole making tool integrally formed together,
- a first slide container in which said eccentric rotation drive mechanism is rotatably contained,
- a feed drive mechanism which is provided with a second electric motor, transmitting means by which a rotational motion by said second electric motor can be transmitted, a second reduction device, a ball screw, and a fixed nut,
- a second slide container which contains a part of said transmitting means, said second reduction device, and a part of said ball screw and which advances and retreats in the axial direction of the hole making tool by said feed drive mechanism, and,
- a casing in which said first slide container and said second slide container are contained, and,
- said hole making tool can rotate about its axis and simultaneously revolve around said eccentric axis (center axis of outer cylinder) of said eccentric cylindrical member to machine a hole in a workpiece.
Dependencies are inferred from the claim text.